Fountain-pen.



ia. MW

K. RA'UCHLE L A. KOEHLER.

FOUNTAIN PEN.

APPLICATION FILED MAY I9. P914.

Patented Dec. 12, 1916.

m: Nolms persas co Nom umn. wAsmNu/om n c KARL RU'CI-ILE, OF HENNEF, AND lAIBIEREL KOEHVLER, OF KOLIVIAR, GERMANY, ASSIGN- ORS TO FIRM KLIC-WERK, FABRIK FR GEBRAUCHSGEGENSTNDE, Gr. M. B. H., OF

HENNEF, GERMANY.

FOUNTAIN-PEN.

Specification of Letters Patent.

Patented Dec. 12, 1916.

Application filed May 19, 1914. Sera1 No. 839,552.

To all whom t may concern Be it known that we, KARL RUGHLE, subject of the King of Prussia, German Emperor, and resident of Hennef-onethe-Sieg, in Rhine Province, Kingdom of Prussia, German Empire, and ALBERT KOEHLER, subject of the King of Prussia, German Emperor, and resident of Kolmar, Alsace German Empire, have invented certain new and useful Improvements in Fountain-Pens, of which the following is a specification.

The present invention relates to fountain pens of the kind in which the nib is drawn into the hollow barrel of the pen when not in use. Hitherto, in this kind of pen the nib is usually pushed forward and retracted by means of a guiding member arranged in the interior of the barrel along its whole length and formed with a screw thread, being operated from the other end of the barrel by turning. This kind of nib-movement has the disadvantage on the one hand that it is comparatively complicated. On the other hand, the ink reservoir is considerably interfered with as regards its capacity by the guiding piece.

Now according to the present invention backward and forward movement of the nib, together with its carrier, is eiected in an entirely novel and special manner, that is l to say, by providing the short body carrying the nib with an external screw thread and providing the forward end of the barrel with an internal thread. Further in the center of the nib carrying part, toward the outside, a small tapped hole is provided into and out of which a rod mounted in the cap of the pen can be screwed. Thus, this rod engages the nib carrying member and takes it with it in both directions, for it carries it into the inl: barrel when the cap is screwed on and unscrews it from the barrel when the cap is unscrewed. At the same time the cap has an internal screw thread and the barrel is provided with a short length of external threads at a certain distance from the forward end so that after the rod mounted in the cap has brought the nib carrying member into the inside of the barrel the cap can be still further screwed down over the external screw thread, to such a distance until the bottom of the cap closes and seals the openings of the ink barrel.

The invention is more clearly described in connection withthe accompanying drawings, in which- Figure l shows the pen with the nib drawn out, and Fig. 2 shows it with the nib retracted.

The hollow ink barrel a is closed at the rear end in the simplest manner by a screw top Z5. The barrel has the internal screw thread c at the forward end and has the external screw thread l upon the outer surface at a fixed distance from the end. The nib e 1s mounted in a short nib-carrier f provided with an external screw thread which engages with the screw thread c. The pen cap g carries the fixed rod it at its bottom. This rod at its free end is provided with a screw thread z' and this engages in a corresponding tapped socket in the nib-carrier Finally, the cap has on its inner surface, near the middle, a screw thread which engages over the screw thread al upon the outer surface of the pen. If, now the cap g is turned in the right-hand direction the screw end c' of the rod 7l. engages in the hole in the nibcarrier f so that it unscrews the bolt from the thread c and passes it into the inside of the barrel. As soon as the length of thread c is passed the nib-carrier f moves freely in the interior of the hollow barrel. However, in this position the internal thread of the cap engages the external thread cl of the barrel so that any free play of the cap and any sudden entry of the nib-carrier f into the hollow barrel is prevented. Now the cap is screwed slowly farther down until the bottom surface reaches the opening in the barrel and seals it. In the same way, but reversely, the nib with its carrier f is withdrawn from the barrel, if the pen is to be got ready for writing. For this purpose the rod 7L draws out the nib-carrier f and screws it into the screw thread c. The rod z, then leaves the nib-carrier f so that the cap can be taken oif and can be placed on the other end of the pen.

Having now particularly described and ascertained the nature of our said invention, and in what manner the same is to be performed, we declare that what we claim is:

A fountain pen comprising a barrel portion having its open end formed slightly frusto-conical and provided with an interior thread, said barrel having an exterior threaded portion intermediate its ends, a cap member having` an interior thread adapted to In testimony whereof We have signed our io be screwed upon said exteriorly threaded names to this specification in the presence ortion of said barrtehi nib carrier tdapiied of two subscribing Witnesses.

4or engagement Wit t e interior y t ireac ec 3 portion of said barrel, a threaded socket formed ooncentricaily of said nib carrier,

and a rod supported centrally of said cap member and adapted for engagement With said threaded socket of said nib carrier.

Witnesses:

JOSEF Emi-IUS, LOUIS VANDORN.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents. Washington, D. C. 

